Dividing-head for punching-machines.



(No Model.)

Patented Feb. 6, I900; P. J. KELLY.

DIVI DING HEAD FDR PUNCHING MACHINES.

(Application filed se t'. s, 1899.)

UNITED STATES PATENT OFFIC PATRICK J. KELLY, OF ELIZABETH, NEIV JERSEY.

DIVIDING-HEAD FOR'PUNCHlNG-MACHINES.

SPECIFICATION forming part of Letters Patent No. 642,822, dated February 6, 1900.

Application filed September 8, 1899. Serial No. 729,814. (No model.)

To all whom it may concern:

Be it known that I, PATRICK J. KELLY, a citizen of the United States, and a resident of Elizabeth, in the county of Union and State of New Jersey, have invented a new and useful Improvement in Dividing-Heads for Punching Machines, of which the following is a specification.

The object of my invention is to provide for so presenting a boiler-head or other circular article to a punching-machine by which holes are to be punched and for so turning and otherwise changing the position of the said article relatively to the punch that the holes will be spaced with positive precision in one or more circular series without the need of any preliminary laying out by hand, such as has hitherto been done by compasses.

I will first describe, with reference to the accompanying drawings, a dividing-head enibodying my invention and afterward point out its novelty by claims.

- Figure 1 of the drawings represents an elevation, partly in section; Fig. 2, a horizontal section in the line 2 2 of Fig. 1; Fig. 3, a View, taken at right angles to Fig. 1, of the lower part of the dividing-head; Fig. 4, a central vertical section corresponding with Fig. 3, taken at right angles thereto.

Similar letters and numerals of reference designate corresponding parts in all the fig-' ures. I

a is a hollow stand or carriage fitted to a slideway b in a stationary bed-plate c and capable of sliding therein in a direction to and fro in relation to any suitable punching machine or apparatus-for example, a punch d and die 6, such as are shown in Fig. 1. This to-and-fro movement is provided for by a rack 5 on the bed-plate and a pinion 6, attached to the stand a, the said pinion being turned by a hand-wheel 7. The stand a is represented as constructed with a removable upper part or cap f, in which and in the lower part of the stand are provided guides g for a central upright shaft or column h, on the top of which is a clamp z'j 70 for securing to it the article in which holes are to be punched, (represented in Fig. 1 as a boiler-head 10,) in the turned-over margin of which holes are to be punched. The said shaft his capable of turning and of moving lengthwise in its guides g.

The shaft h has in its lower part a series of grooves 12, which constitute a toothed rack and which while the said shaft is turned to any position remains in gear with a pinion Z (see Fig. 2) on a horizontal shaft m, which works in bearings in the sides of the upper part fof the stand and which is furnished outside of the stand with a worm-gear 8, which gears with an endless screw 9 on a shaft 02, workingin hearings in brackets 0 on the stand. The said shaft 11 is furnished with a handwheel or crank 19, by the turning of which the shaft his raised or lowered. To support the shaft h in the position to which it is vertically adjusted, there is placed under its bottom within the stand a a sole-piece g, which is adj usted by a wedge 0*, which works through an opening in one side of the stand and is moved by the turning of the hand-screw s, which screws into the said wedge and turns, but is confined lengthwise in a bracket 25, which is fastened to the outside of the stand. For the purpose .of turning it the shaft or column It has provided on it a worm-gear to, which gears with an endless screw c on a shaft to, which works in bearings in the sides of the stand.

To provide for the vertical movement of the shaft h without disturbing the engagement of the worm-gear u. and endless screw 42, the said gear is confined vertically between the upper and lower guides g and fitted with a spline which enters a groove 11 in the said shaft and permits the said shaft to slide through the said gear, but compels the gear and shaft to turn together.

The shaft 10 has fast upon it, outside of the stand Ct, a slotted arm at, which carries a pin y, which is adjustable in the said arm toward and from the shaft w and capable of entering any one of the several circular series of equidistantly-spaced holes in an ordinary circular dividing-plate 2, which is affixed to'the exterior of the stand. The number of revolutions of the shaft w to one of the shafts h and the number of holes in each of the circular series of the dividing-plate being determined, it will be easy to determine to which of the circular series of holes in the dividingplate to adjust the pin y and to determine how many revolutions or such fractional parts of a revolution as are represented by the spaces between the holes of the series it may be necessary to turn the arm a and the shaft to to turn the shaft h and the head 10 or article clamped thereto proper and accurate distances to present the said article accurately to the punch for the punching of the holes all around the said articles at the desired uniform distances apart.

By the raising and lowering of the shaft h in the stand a provision is afforded for the punching of two or more series of holes in the head or article 10. By the movement of the stand a in the slideway Z) of the bed-plate c provision is afforded for punching articles of various sizes.

The clamp for securing the boiler-head or other article 10 to the shaft h may be of any suitable kind. It is represented as consisting of a circular centering-block 1 of a size to fit a central hole in the said article secured to the head of the shaft h, a clamping-cap j, which bears upon the said article around the said block, and a clampingbolt 7c, attached to the centering-block and provided with a nut by which the said cap j is caused to hold down the said article upon the head of the shaft h, If the boiler-head or other article to be punched should not normally require a central hole, such a hole of small size maybe made in it for the purpose of receiving a centering-block or clamping-bolt and after the punching has been done may be closed in any suitable manner.

It is obvious that I may apply my dividinghead as well to a drilling-machine as to a punching-machine, and therefore I consider such application as within the scope of my in- Vention.

What I claim as my invention is 1. In a dividing-head for a punching-machine having a horizontal punch, the combination of an upright shaft and a support therefor, means for attaching to said shaft an article to be punched, means for turning said shaft and means for moving said shaft vertically in relation to said punch while in engagement with the means for turning it, substantially as herein described.

2. In a dividing-head for a punching-machine having a horizontal punch, the combination of an upright shaft and a support therefor, means for attaching to said shaft an article to be punched, means for turning said shaft, means for moving said shaft Vertically in relation to said punch while in engagement with the means for turning it, a dividing-plate affixed to said support, a second shaft geared with said upright shaft and a pin carried by said second shaft and adj ustable at different distances from the center thereof engaging with said dividing-plate, substantially as herein described.

3. In a dividing-head for a punching-machine having a horizontal punch, the combination of an upright shaft and a stand therefor, a bed-plate in which said stand is supported, means for moving said stand on the bed-plate, means for securing to said shaft an article to be punched, means for turning said shaft, and means for moving said shaft vertically in relation to said punch while in engagement with the means for turning it, substantially as herein described.

4. In a dividing-head for a punching-machine, the combination of a shaft and a support therefor, means for securing to said shaft an article to be punched, a worm-gear fitted to said shaft to turn With it but confined in the direction of the length of the said shaft, an endless screw and means for turning the same in engagement with said worm-gear for turning the shaft, a rack encircling said shaft, and a pinion and means for turning the same in engagement with said rack for raising and lowering the shaft, all substantially as herein set forth.

5. In a dividing-head for a punching-machine, the combination of an upright shaft and a stand therefor, means for attaching to said shaft an article to be punched, a toothed rack encircling said shaft, a pinion and means for turning the same in engagement with said rack for raising and lowering said shaft, a sole-piece in said stand under said shaft, a wedge under said sole-piece and a screw for operating the said wedge for the adjustment of the sole-piece, all substantially as herein set forth.

In testimony that I claim the foregoing as my invention I have signed my name, in presence of two witnesses, this 25th day of August, 1899.

PATRICK J. KELLY.

Witnesses:

PETER R. FAHRMAN, JOHN P. Lone. 

